Check PTC heater relay #1 component coil resistance
IG KEY "OFF", ENGINE "OFF".
Disconnect PTC heater relay #1.
Measure the resistance between PTC heater relay #1 component terminal 85 and terminal 86.
Specification : 52±5 Ω (20℃)
Is the measured resistance within the specification?
YES
Go to "2. Check PTC heater relay #1 component operation" as follows.
NO
Replace PTC heater relay #1 and go to "Verification of Vehicle Repair".
Check PTC heater relay #1 component operation
IG KEY "OFF", ENGINE "OFF".
Disconnect PTC heater relay #1.
Supplies random B+ and ground to coil sides of PTC heater relay #1. ( terminal 85, terminal 86)
Check continuity between PTC heater relay #1 component terminal 30 and terminal 87.
Specification :
When power is supplied : Continuity ( below 1.0Ω )
When power is not supplied : Discontinuity ( Infinite Ω )
Is the continuity test within the specification?
YES
Go to "Verification of Vehicle Repair".
NO
Replace PTC heater relay #1 and go to "Verification of Vehicle Repair".
※ Repeat this process 2~3 times.
